Adjustable pointer and stop for pumps and the like.



S. F. BOWSER.

ADJUSTABLE POINTER AND STOP FOR PUMPS AND THE LIKE. APPLICATION HLED N0v.29,1912.

' Liw gwg Patented Apr. 2?, 1915.

PATE TC had JIM :14 o

SYLVANUS 33. BO'WSEB, 015 FORT WAYNE, INDIANA, ASSIGNOR TO S. R'BGKVSEE a COMPANY, INCORPORATED, OF FORT "WAYNE, INDIANA.

marinas.

Specification of Letters Patent.

Patented Apr. 2?,

Application filed 2 amber 29, 19152. Serial No. 733,997.

T aZZ whom it may concern I Be it known that I, SYINANUS E. Bowsnn,

a citizen of the United States, residing at.

Fort Wayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Adjustable Pointers and Stops for Pumps and the like, of which the following is a specification.

This invention relates to combined pointers and stops for use in connection with pumps and the like, and one of the principal objects of the'invention is to provide an improved device of this class which may be accurately positioned and locked in position.

A further object of the invention is to provide a device of this class Which may be used both as a' pointer and as a stop, and which is eiiective and elficient in operation.

For the attainment of these ends and the accomplishment 01": other new and useful th several parts generally shown in the accompanying drawing and described in the specificati n but more particularly pointed out in the appended claims. a

r In the accompanying drawing, Fi ure 1 is a detail elevation of a portion of a pump showing a combined pointer and stop as ap plied thereto; Fig. 2 is an enlarged detail sectional view taken on the line 2--2 of Fig. 1, and Fig. 3 is a sectional View taken on the line 3-3 of Fig. 2.

In a certain class of pumps the stroke of the pump piston islimited in one direction by one or more stops. The amount of liquid pumped by the pump during a single strok of the piston may be varied by moving the corresponding stop into position to engage a moving part of the pump. The present invention relates to a stop device of improved construction and operation.

Referring now more particularly to the drawing and in the present exemplification of the invention the numeral 10 designates generally the cylinder of a pump of any desired or suitable construction having a cap member 11 through which a piston rod 12 extends. This piston rod is connected by means of arm 13 to a reciprocable 'aclr it having an extending shoe or projec an 15 at one end thereof. This roe" may be reciproeated in any desired or suitable manner as, for example, by means of gears {not shown) disposed in the casing 16 which rotated by means of a hand lever 1?. The lowermost position of the rack is indicated by a character 18 which appears through an opening 19 in a plate 20 secured to the casing 16. The reciprocation of the rack 14 causes,

also the movement of the piston rod in, the

rack 14: carrying with it the projection 15. An adjustable detent is provided to limit the movement or" the rack in one direction and the present invention relates to a stop nevice for accomplishing this result. Althou h this stop device is particularly adapted tor use in the present connection, it is obvious, of course, that it must have a broad and general application to any machine.

In its preferred construction, this stop clea'ice consists of a member 21 provided with a recessed portion entendingthrough the member intermediate 0" its ends. sides of the recess are pro ed with alined openings extending substantially at right angles to the recess. Disposed within the recess is a ring-shaped member 24: internally threaded and provided on the outer edge with a series of notches 2 The ring-shaped member 2a is adapted to be threaded upon a rod 26 which latter extends substantially parallel with the pump casing 10 and a distance therefrom. The openings 23 of the member 221 are slightly larger than the diameter of the rod 26 so that the member :21 itself may pass freely along the bar but being engaged by the threaded member 2% can be moved only in accordance with the movement of the latter. in order to prevent the rotation of the member 21 respect to the rod 26, it is provided with a rounded surface 30 substantially conforming to curvature of the pump casing 10 (see Fig. 2) so that by properly spacing the threaded rod 26 from the pump casing 10, the rounded surface 30 permits the member 21 to more longitudinally upon the rod but prevents its rotation. It will be evident that by rotating the member 2% upon the rod 26, the longitudinal position of the member 21 maybe vThe accurately determined. In order to lock the Nin -the cylinderwlien a certain prcdeter-' member 21.

be Withdrawn and when the nin is inserted the member is locked against rotation and the member 21 is locked against longitudinal movement with respect to the rod 26.

Pivotall'y mounted in the recess 22 of the.

member 21 by means of a pin 3i is :1 detent 35 having a projection 36 to engage the member 2l and prevent the rotation of the detent in one direction, a straight edge 37, and a projecting finger 38 by means of which the detent may he moved. Then this detent 35 is rotated it will be in position to engage the projection 15 of the rack 14. The member 21 is also provided. with a projectingi. finger or pointer 39 and the rod 26 is sodisposedwith respect to the cylinder 10 that the fingori39-will be in proximity to the outer surface of the'cylinder. The shell of the cylinder is provided with a series of perforations which ere adaptedto receive transparentwindows 40 secured in place by a frame or casing .1.1. The fingers 39 preferably'extendto a osition over the frame and transparent window 4.0 to indicate the height to which the liquid must rise mined amount is to be pumped.

It is evidentthat the detent may be so positioned that the rack 14 will be stopped at a pointindicated by the pointer. 39 of the There is, therefore, a cooperative. function and relation between the pointer and the detent portion of the memher. i

The present invention relates to the form andconstruction of the combined pointer and stop and although particularly de scribed as employed in connection with a pump of this class, it is obvious that it may have a more general application to apparatus of the same or a difl'erent class.

What I claim is:

1; In a device of the class described, the combination with a rod, of a recessed member freely movable along the rod having a lateral recess intermediate the ends, a ringshaped member internally threaded and disposed within the recess of said member and a -table in position upon the rod, and

means toengage and prevent the rotation of the ring-shaped member upon the rod.

2. In a device of the class described, the combination .with a rod, of a recessed me1nber freely movable along the rod having a laterally opening recess, a ring-shaped member internally threaded and disposed within the recess of said member and adjustably in position upon the rod, and means to releasably engage and lock against rotation.

3.111 a device of thehlass described, the cmnbination with a threaded rod of a laterally recessed member having an opening through which the rod extends at right angles to the recess, a ring-shaped member disthe threaded member with the stop to point to the position on the outside of'the cylinder at which the pump piston is stopped within the cylinder.

5. The combination with a fluid pump having a reciprocable piston, of a combined stop and pointer for the pump, the stop being effective to limit the movement of the pump, and the pointer indicating on the cyl-- inder the position of the pump piston within the cylinder when stopped by the said stop; i

6. An adjustable stop comprising a recessed member with transverse almed open ings, a threaded rod upon which theme'mher is movable, an internally threaded ringshapcd member disposed" within the recess; and a pivotal] y mounted member-with the pivoted portionthereof disposed within the recess, 7 j r/ 7. Inga device of the class described, the combination ,with a threaded rod, of -a memher having portions spaced apart and-openings at right angles to said portions to 'receivo the rod and permit the freepassage of the member along the rod, .a ring-shaped l internally threaded member disposed u )on the rod between said portions of the rst named member, and a detent device pivotv ally secured to said portions and movable into and out of arr-engaging or stop position.

,8. In avlevice of the class'described, the combination with a recessed member, of an internally threaded adjusting member disposed in said recess, a rod "on which the recessed member is freely movable, and the other member is threaded, and a detent-de-- vice pivotally mounted in said recess having a projection to engage the recessed member to prevent the rotation of the detent device in, one direction, a straight edged portion, and-a projecting portion comprising means for rotating the detent. I 9. A stop device of the class described comprising a threaded rod, a recessed mem-' her having openings at right angles t'othrecess to receive the rod, and-a rm -thaped internally threaded member ad justa in upon the rod and disposed in the recess, anii a' de tent device'pivotally 'rnountedfiri-saidreeds having a projection and adaptedrto bei'p tated into and out of engaging position; 10. A combined'pointer-and sto comprising a threaded rod a recessed 'mem or formed with a finger at one end and having flin ed" openings. extending transversely with respect to the recess, an internally threaded member having an opening less in diameter than the openings in said recessed member and with'a notched periphery, a. detent device pivotally mounted at one end in the recess of said recessed member having an engaging edge and a projecting portion to more the device into and out of engaging position, and means to prevent the rotation of the threaded member with respect to the recessed member. the recessed and threaded member being adapted to be disposed upon the threaded rod along which they may be adjnstably positioned by rotating the threaded member.

l1. ln a pump, the combination with a cylinder and a reciprocable operating memof rod disposed adjacent the cylinder and a step movable and adjustable on the rod l wing a surface conforming to the ad jacentsurface of the cylinder to prevent the rotation of the stop.

12. In a pump having a pump cylinder and a reciprwable operating member, a threaded rod disposed adjacent the pump cylinder, a stop member freely movable on he rod having a portion conforming to the adjacent surface of the cylinder to prevent the rotation of themember upon the rod, and a threaded member in connection with the stop member to adjust the position of the stop member on the rod.

A pump comprising a cylinder and e reciprocablo operating member, a threaded rod secured adjacent the cylinder but spaced therefrom a recessed stop member freely movable on the rod and having a face conforming to the adjacent surface of the cyl- 111C. r for preventing the rotation of the stop me door with respect to the rod, and an adnsting member threaded upon the rod and l rated in the of the stop member for varying the position of the latter along the rod.

14. A pump comprising a cylinder and a reciprocable operating member, a threaded rod secured adjacent the cylinder but spaced therefrom, a recessed stop member freely movable on the rod and having a face conforming to the adjacent surface of the cylinder for-preventing the rotation of the stop member with respect to the rod, an adjusting member threaded upon the rod and located in the recess of the stop member for varying the position of the latter along the rod, and means to lock the threaded member against rotation with respect to the stop member.

15. In a pump, the combination with a pump cylinder having windowed apertures alined longitudinally thereof and e reciprocable operating member, a threaded rod disposed parallel with the cylinder at a distance therefrom and adjacent the said apertures, combined pointer and stop member apertured to pass freely upon the rod and having a surface conforming to the adjacent surface of the cylinder to prevent the rotation thereof and with the pointer in the line f the apertures to indicate the proper stopping position of the operating member for a set position of the stop member, and a member threaded upon the rod adapted, when rotated, to change the longitudinal position of the other member for varying the place at which the operating member will be stopped.

In testimony whereof I have signed my name to this specification, in the presence of twolsubscribing witnesses, on this 18th day of November A. D. 1912.

Witnesses j J. R. MATLACK, L. W. THOMAS. 

